No doubt the Nestorians rejected your religion long before 431 AD...I'll take the side of the Nestorians...
Rev 22:13 I am Alpha and Omega, the beginning and the end, the first and the last.
Rev 1:17 And when I saw him, I fell at his feet as dead. And he laid his right hand upon me, saying unto me, Fear not; I am the first and the last:
Oddly, this doesn't clear it up for you...
So, you DO NOT believe our Lord, Jesus Christ was fully man and fully God?
Which part WASN'T He?
Rejecting the God-given gifts of logic and common sense will do that to a man.